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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 36436Generated: October 25, 2026

Hydrochloric Acid → 4,6-Diaminoresorcinol Dihydrochloride

https://huagongshe.com/reaction/36436

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
Reactant2,4-Diamino-5-methoxyphenolHCID 15323266—
Product4,6-Diaminoresorcinol DihydrochlorideHCID 2733648—

Reaction Conditions

Temperature140 °C

Reaction Steps

2.5 g of 5-methoxy-2,4-diaminophenol and 25 mL of concentrated HCl is placed in a 45 mL Hastalloy C autoclave. The mixture is then heated to 140° C. for 16 hours at a pressure of about 200 psi. The reaction mixture is then cooled to 25° C., the reactor is vented and the product, a white solid, is filtered and dried to yield 1.2 g of crude 4,6-diaminoresorcinol dihydrochloride.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05414130
Source datasetuspto-grants-1995_05
ORD IDord-ab71598ba26648eb9843eca6cd93f375
Source noteuspto-grants-1995_05